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HP ZBook 15u G5 (FHD, i7-8550U) Workstation Review

Benjamin Herzig (translated by Alex Alderson), 06/05/2018

Too much Office, not enough Workstation. The ZBook 1xu series is at the lower end of HP workstation devices. These models are based on the EliteBook to save costs. Find out in this review of the ZBook 15u G5 why this concept still doesn’t work.

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The ZBook name has been used with HP mobile workstations since superseding the EliteBook in 2013. The new brand survived the change from Hewlett-Packard to HP Inc. and quickly established itself as a mainstay of the workstation market. ZBooks became synonymous with combining high performance, good craftsmanship and HP’s excellent DreamColor displays. HP caters for more just the high-end though and launched the ZBook 1xu series for those who needed CAD-optimized GPUs but still wanted a power-efficient notebook. Our focus in this review is the ZBook 15u G5, one of HP’s latest offerings in its ZBook 1xu series.

Devices of the 1xu series are traditionally equipped with power-efficient ULV dual-core processors. Combining dual-core processors with a workstation has left us unimpressed thus far. The release of Intel Kaby Lake Refresh CPUs could change this though by introducing quad-core computing to ULV processors. We will find out in this review whether these quad-core CPUs can bridge the gap between workstations and ULV processors.

We will be comparing the ZBook 15u G5 against the ZBook 15u G4, the ZBook 15 G4, the HP EliteBook 850 G5 and the Lenovo ThinkPad P52s.

We will be skipping the sections about the case, connectivity and input devices as they are largely identical to the EliteBook 850 G5. The ZBook 15u G5 has only two aesthetic differences from the EliteBook 850 G5: The ZBook 15u G5 comes in a darker color and naturally carries the ZBook logo rather than the EliteBook logo. Information on these areas can be found in our EliteBook 850 G5 review.

Our test device is a more affordable ZBook 15u G5 configuration. Our test device is equipped with an Intel Core i7-8550U processor, 8 GB RAM, a 256 GB SSD and an AMD Radeon Pro WX 3100 GPU. This configuration costs around 1,750 Euros (~$2,059).

A second test unit was also provided by CUKUSA for us to double-check our benchmarks and results between two similar SKUs.

HP ZBook 15u G5 2ZC05EA
Graphics adapter
AMD Radeon Pro WX 3100 Mobile - 2048 MB, Core: 1046 MHz, Memory: 1500 MHz, 23.20.787.768, AMD Switchable Graphics
Memory
8192 MB 
, DDR4 2400, 1 of 2 slots occupied, maximum of 32 GB RAM supported
Display
15.6 inch 16:9, 1920 x 1080 pixel 141 PPI, CMN15E7, IPS LED, glossy: no
Mainboard
Intel Kaby Lake-U + iHDCP 2.2 Premium PCH
Storage
Toshiba XG5 KXG50ZNV256G, 256 GB 
, M.2 2280 SSD, 162 GB free
Soundcard
Intel Kaby Lake-U/Y PCH - High Definition Audio
Connections
2 USB 3.0 / 3.1 Gen1, 1 USB 3.1 Gen2, 1 Thunderbolt, 1 HDMI, 1 DisplayPort, 1 Kensington Lock, 1 Docking Station Port, Audio Connections: Combo headphone and microphone 3.5 mm jack, 1 SmartCard, 1 Fingerprint Reader, NFC, Brightness Sensor
Networking
Intel Ethernet Connection I219-V (10/100/1000MBit), Intel Dual Band Wireless-AC 8265 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 19 x 371 x 251 ( = 0.75 x 14.61 x 9.88 in)
Battery
56 Wh Lithium-Polymer
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: 720p
Additional features
Speakers: Bang & Olufsen stereo speakers, Keyboard: Six-row chiclet keyboard with number pad, Keyboard Light: yes, HP Jumpstart, HP Client Security, HP Power Manager, HP WorkWise, HP Support Assistant, HP Sure Run, HP Velocity, Microsoft Office Trial, 36 Months Warranty
Weight
1.914 kg ( = 67.51 oz / 4.22 pounds), Power Supply: 352 g ( = 12.42 oz / 0.78 pounds)
Price
1750 Euro

 

Size Comparison

Right-hand side: SIM slot, 3.5 mm jack, USB 3.0 Type-A port, HDMI, RJ45 Ethernet, docking port, USB Type-C Thunderbolt 3 port, power connector
Right-hand side: SIM slot, 3.5 mm jack, USB 3.0 Type-A port, HDMI, RJ45 Ethernet, docking port, USB Type-C Thunderbolt 3 port, power connector
Left-hand side: Kensington lock, USB 3.0 Type-A port, Smart card reader
Left-hand side: Kensington lock, USB 3.0 Type-A port, Smart card reader
Networking
iperf3 Client (receive) TCP 1 m 4M x10
HP ZBook 15u G5 2ZC05EA
Intel Dual Band Wireless-AC 8265
639 MBit/s ∼100%
Lenovo ThinkPad T580-20LAS01H00
Intel Dual Band Wireless-AC 8265
638 MBit/s ∼100% 0%
Average of class Workstation
  (292 - 705, n=22)
595 MBit/s ∼93% -7%
HP ZBook 15 G4-Y4E80AV
Intel Dual Band Wireless-AC 8265
559 MBit/s ∼87% -13%
HP EliteBook 850 G5 3JX58EA
Intel Dual Band Wireless-AC 8265
532 MBit/s ∼83% -17%
HP ZBook 15u G4
Intel Dual Band Wireless-AC 8265
515 MBit/s ∼81% -19%
iperf3 Client (transmit) TCP 1 m 4M x10
HP EliteBook 850 G5 3JX58EA
Intel Dual Band Wireless-AC 8265
667 MBit/s ∼100% +26%
HP ZBook 15u G5 2ZC05EA
Intel Dual Band Wireless-AC 8265
528 MBit/s ∼79%
HP ZBook 15u G4
Intel Dual Band Wireless-AC 8265
506 MBit/s ∼76% -4%
Average of class Workstation
  (158 - 665, n=22)
476 MBit/s ∼71% -10%
HP ZBook 15 G4-Y4E80AV
Intel Dual Band Wireless-AC 8265
475 MBit/s ∼71% -10%
Lenovo ThinkPad T580-20LAS01H00
Intel Dual Band Wireless-AC 8265
162 MBit/s ∼24% -69%

Display

Sub-pixel array
Sub-pixel array
Marginal backlight bleeding
Marginal backlight bleeding

The choice of displays is confusing, with HP offering several Full HD matte panels. These 1920x1080 displays differ by brightness, the cheapest of which has an average maximum brightness of 220 cd/m², while the more expensive options are rated at 400 and 700 cd/m² respectively. Incidentally, the brightest display is equipped with HP SureView, a privacy screen that we tested in our EliteBook 830 G5 review.

Further complicating things is the fact that HP also offers touchscreen variants, which have a glossy finish and a UHD display with a 3840x2160 resolution. All display options are IPS based.

The ZBook 15u G5 is only available with two display options in Germany currently. These are both 1080p options, the differences of which are barely noticeable to the untrained eye. Our test device is equipped with the cheapest display, which HP promises will achieve 220 cd/m² brightness. We could only replicate that value at maximum brightness, with the average maximum brightness measuring at only 212 cd/m².

The cheapest display that HP offers with the ZBook 15u G5 is clearly a downgrade from the ZBook 15u G4, which had a display that averaged 310 cd/m². Likewise, the Lenovo ThinkPad P52s averages 284 cd/m², which while being darker than the ZBook 15u G4, is still significantly brighter than our test device. It’s odd that HP equipped the ZBook 15u G5 with a worse Full HD display than it did with the cheaper EliteBook 850 G5.

We measured brightness uniformity at 88%, which is 5% worse than the ZBook 15u G4 but is on par with comparable devices. Our test device exhibits barely any backlight bleeding either.

The display in our test device does use PWM to regulate display brightness at 40% brightness and below. We measured PWM at 25,770 Hz, which should be a high enough frequency to not trouble those who are PWM-sensitive.

224
cd/m²
208
cd/m²
203
cd/m²
206
cd/m²
229
cd/m²
202
cd/m²
204
cd/m²
226
cd/m²
210
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 229 cd/m² Average: 212.4 cd/m² Minimum: 11.1 cd/m²
Brightness Distribution: 88 %
Center on Battery: 229 cd/m²
Contrast: 996:1 (Black: 0.23 cd/m²)
ΔE Color 4.2 | 0.4-29.43 Ø6.3, calibrated: 4.2
ΔE Greyscale 2 | 0.64-98 Ø6.5
64.5% sRGB (Argyll 3D) 41% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.23
HP ZBook 15u G5 2ZC05EA
CMN15E7, , 1920x1080, 15.6
HP ZBook 15u G4
LP156WF6, , 1920x1080, 15.6
HP EliteBook 850 G5 3JX58EA
AUO24ED, , 1920x1080, 15.6
HP ZBook 15 G4-Y4E80AV
LG Philips LGD057E, , 1920x1080, 15.6
Lenovo ThinkPad P52s-20LB000HGE
NV156FHM-N47, , 1920x1080, 15.6
Response Times
3%
6%
-1%
-21%
Response Time Grey 50% / Grey 80% *
41.6 (22, 19.6)
39.6 (22.4, 17.2)
5%
42 (20, 22)
-1%
39.2 (20.4, 18.8)
6%
47.2 (25.2, 22)
-13%
Response Time Black / White *
28.8 (15.6, 13.2)
22 (12, 10)
24%
25 (14, 11)
13%
25.6 (14.8, 10.8)
11%
38.4 (22.8, 15.6)
-33%
PWM Frequency
25770 (40)
20830 (90)
-19%
20830 (80)
-19%
21550 (91)
-16%
Screen
-9%
5%
13%
6%
Brightness middle
229
320
40%
402
76%
321
40%
291
27%
Brightness
212
310
46%
383
81%
320
51%
284
34%
Brightness Distribution
88
92
5%
88
0%
89
1%
91
3%
Black Level *
0.23
0.45
-96%
0.41
-78%
0.29
-26%
0.11
52%
Contrast
996
711
-29%
980
-2%
1107
11%
2645
166%
Colorchecker DeltaE2000 *
4.2
5.5
-31%
5.25
-25%
4.5
-7%
6.7
-60%
Colorchecker DeltaE2000 max. *
18
9
50%
8.65
52%
9.5
47%
20.2
-12%
Colorchecker DeltaE2000 calibrated *
4.2
5.19
-24%
4.5
-7%
Greyscale DeltaE2000 *
2
4.8
-140%
4
-100%
2.9
-45%
4.5
-125%
Gamma
2.23 108%
2.28 105%
2.68 90%
2.27 106%
2.28 105%
CCT
6292 103%
6987 93%
6756 96%
6519 100%
7503 87%
Color Space (Percent of AdobeRGB 1998)
41
55
34%
58
41%
54.2
32%
39.6
-3%
Color Space (Percent of sRGB)
64.5
83.8
30%
89
38%
82.6
28%
61.7
-4%
Total Average (Program / Settings)
-3% / -6%
6% / 5%
6% / 10%
-8% / 1%

* ... smaller is better

CalMAN: Color values (uncalibrated)
CalMAN: Color values (uncalibrated)
CalMAN: Saturation (uncalibrated)
CalMAN: Saturation (uncalibrated)
CalMAN: Grayscale (uncalibrated)
CalMAN: Grayscale (uncalibrated)
CalMAN: Color values (calibrated)
CalMAN: Color values (calibrated)
CalMAN: Saturation (calibrated)
CalMAN: Saturation (calibrated)
CalMAN: Grayscale (calibrated)
CalMAN: Grayscale (calibrated)

The contrast ratio of 996:1 is good for a workstation at this price, thanks in part to the low 0.23 cd/m² black value. Our test device has no noticeable color cast and while there are slight saturation variations, we could not eliminate these with further calibration.

The color-space coverage is typical for a cheap display. Our test device achieved 64.5% sRGB and 41% AdobeRGB, values which are too low for professional use. This may be tolerable for an office notebook but could be a problem for a workstation. Why HP even offers such a poor display is a mystery to us.

sRGB: 64.5%
sRGB: 64.5%
AdobeRGB: 41%
AdobeRGB: 41%
Using the ZBook 15u G5 outside in the shade
Using the ZBook 15u G5 outside in the shade
Using the ZBook 15u G5 outside in the sunshine
Using the ZBook 15u G5 outside in the sunshine

Our test device is difficult to use outside thanks to its low display brightness. The matte finish fails to provide a better experience even when trying to use the device in the shade. The cheapest display option is not one we would recommend if you frequently work outside.

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
28.8 ms ... rise ↗ and fall ↘ combined↗ 15.6 ms rise
↘ 13.2 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 66 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (25.9 ms).
       Response Time 50% Grey to 80% Grey
41.6 ms ... rise ↗ and fall ↘ combined↗ 22 ms rise
↘ 19.6 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 52 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (41.4 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM detected 25770 Hz ≤ 40 % brightness setting

The display backlight flickers at 25770 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 40 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 25770 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 54 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8895 (minimum: 43 - maximum: 142900) Hz was measured.

Our test device has strong viewing angles thanks to its IPS display. There are no brightness or color distortions even at acute angles.

Viewing angles
Viewing angles

Performance

There are currently two versions of the ZBook 15u G5 that are available in Germany. We are testing the cheapest model, which is equipped with an Intel Core i7-8550U processor, an AMD Radeon Pro WX 3100 GPU, a 256 GB SSD and 8 GB DDR4 2400 RAM. There are two SO-DIMM RAM slots that support up to 32 GB of RAM. The 8 GB stock RAM occupies one slot. The other model costs between 200 and 300 Euros (~$235 and ~$353) more and offers more RAM and a larger SSD. The CPU and GPU remain the same, with the same GPU being offered across models including those currently unavailable in Germany. A third variant should be coming to Germany according to HP, but this is not yet available. This model will cost over 1,000 Euros (~$1,176) more than our test device and is equipped with an Intel Core i7-8650U processor, a 1 TB SSD and 32 GB RAM.

HWiNFO
HWiNFO
CPU-Z
CPU-Z
CPU-Z Caches
CPU-Z Caches
CPU-Z Mainboard
CPU-Z Mainboard
CPU-Z Memory
CPU-Z Memory
CPU-Z SPD
CPU-Z SPD
GPU-Z Intel UHD Graphics 620
GPU-Z Intel UHD Graphics 620
LatencyMon
LatencyMon

Processor

The Intel Core i7-8550U is a ULV quad-core processor. The CPU has a 15 W thermal design power (TDP) by default. Workstations are generally equipped with at least 45 W processors. The Core i7-8550U has a 1.8 GHz base clock speed that can Turbo Boost up to 4 GHz when required.

Please see our CPU benchmark page for a more detailed look at the Intel Core i7-8550U and its performance compared with other CPUs.

In short, the CPU performance in our test device is disappointing. While the CPU can Turbo Boost up to 44 W, it can only do so for 28 seconds. Thereafter, the TDP drops to 15 W and the clock speed reduces from 3.7 GHz to between 2.3-2.4 GHz. Our Cinebench R15 loop corresponds with this CPU behavior. Our test device initially scored 552 points in the multi-core test. This then decreased when the TDP returned to 15 W and scores stabilized at around 500 points for the remainder of the loop.

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Cinebench R15 CPU Multi 64 Bit

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While the ZBook 15u G5 is considerably faster than its predecessor, the 15u G5 performs below average in comparison to notebooks released in 2018. This is even more damning considering that the 15u G5 is a workstation as these are generally more powerful than their notebook counterparts. The ZBook 15u G5 is not only weak when compared with H-CPU powered laptops, but it is also weak against the i7-8550U-equipped Lenovo ThinkPad P52s. The ZBook 15u G5 is practically 30% slower than the ThinkPad P52s in benchmarks.

The CPU is throttled out of the factory. At factory settings, our test device only scored 421 points in Cinebench R15. This restriction can be removed in the BIOS as with all current HP EliteBooks and ZBooks.

Cinebench R15
CPU Single 64Bit
HP ZBook 15 G4-Y4E80AV
Intel Xeon E3-1535M v6
176 Points ∼100% +2%
HP ZBook 15u G5 2ZC05EA
Intel Core i7-8550U
172 Points ∼98%
Lenovo ThinkPad P52s-20LB000HGE
Intel Core i7-8550U
171 Points ∼97% -1%
Average Intel Core i7-8550U
  (108 - 172, n=49)
161 Points ∼91% -6%
Average of class Workstation
  (117 - 179, n=70)
151 Points ∼86% -12%
HP ZBook 15u G4
Intel Core i7-7500U
147 Points ∼84% -15%
HP EliteBook 850 G5 3JX58EA
Intel Core i5-8250U
144 Points ∼82% -16%
CPU Multi 64Bit
HP ZBook 15 G4-Y4E80AV
Intel Xeon E3-1535M v6
806 Points ∼100% +46%
Lenovo ThinkPad P52s-20LB000HGE
Intel Core i7-8550U
719 Points ∼89% +30%
Average of class Workstation
  (260 - 1217, n=71)
651 Points ∼81% +18%
HP EliteBook 850 G5 3JX58EA
Intel Core i5-8250U
588 Points ∼73% +7%
Average Intel Core i7-8550U
  (301 - 761, n=52)
577 Points ∼72% +5%
HP ZBook 15u G5 2ZC05EA
Intel Core i7-8550U
552 Points ∼68%
HP ZBook 15u G4
Intel Core i7-7500U
357 Points ∼44% -35%
Cinebench R10 Rendering Multiple CPUs 32Bit
17505
Cinebench R10 Shading 32Bit
8307
Cinebench R10 Rendering Single 32Bit
6445
Cinebench R10 Shading 64Bit
5661 Points
Cinebench R10 Rendering Multiple CPUs 64Bit
22346 Points
Cinebench R10 Rendering Single CPUs 64Bit
8430 Points
Cinebench R11.5 CPU Single 32Bit
1.72 Points
Cinebench R11.5 CPU Multi 32Bit
5.55 Points
Cinebench R11.5 OpenGL 32Bit
75.59 fps
Cinebench R11.5 CPU Single 64Bit
1.93 Points
Cinebench R11.5 CPU Multi 64Bit
5.86 Points
Cinebench R11.5 OpenGL 64Bit
75.3 fps
Cinebench R15 OpenGL 64Bit
74.18 fps
Cinebench R15 Ref. Match 64Bit
98 %
Cinebench R15 CPU Multi 64Bit
552 Points
Cinebench R15 CPU Single 64Bit
172 Points
Help

System Performance

Our test device performed relatively poorly in the PCMark benchmarks. Other workstations are faster on average than the ZBook 15u G5. Worse still, even high-performance notebooks outperform the ZBook 15u G5. With that being said, the ZBook 15u G5 performs well in daily use and we had no problems with the system performance of our test device.

PCMark 8
Work Score Accelerated v2
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
5423 Points ∼100% +6%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (5137 - 5183, n=2)
5160 Points ∼95% 0%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
5137 Points ∼95%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
5100 Points ∼94% -1%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
4980 Points ∼92% -3%
Average of class Workstation
  (3311 - 5655, n=52)
4739 Points ∼87% -8%
Creative Score Accelerated v2
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
5663 Points ∼100% +5%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (5369 - 5376, n=2)
5373 Points ∼95% 0%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
5369 Points ∼95%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
5127 Points ∼91% -5%
Average of class Workstation
  (2399 - 8015, n=42)
5042 Points ∼89% -6%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
4851 Points ∼86% -10%
Home Score Accelerated v2
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
4375 Points ∼100% +18%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
4169 Points ∼95% +12%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (3721 - 4438, n=2)
4080 Points ∼93% +10%
Average of class Workstation
  (2320 - 5505, n=52)
3917 Points ∼90% +5%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
3728 Points ∼85% 0%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
3721 Points ∼85%
HP EliteBook 850 G5 3JX58EA
UHD Graphics 620, 8250U, Toshiba XG5 KXG50ZNV256G
3669 Points ∼84% -1%
PCMark 10
Digital Content Creation
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
4633 Points ∼100% +36%
Average of class Workstation
  (2466 - 6889, n=14)
4612 Points ∼100% +36%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (3397 - 3473, n=2)
3435 Points ∼74% +1%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
3397 Points ∼73%
HP EliteBook 850 G5 3JX58EA
UHD Graphics 620, 8250U, Toshiba XG5 KXG50ZNV256G
2807 Points ∼61% -17%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
2734 Points ∼59% -20%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
2609 Points ∼56% -23%
Productivity
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
7539 Points ∼100% +11%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
7201 Points ∼96% +6%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (6777 - 6944, n=2)
6861 Points ∼91% +1%
Average of class Workstation
  (5424 - 7944, n=14)
6838 Points ∼91% +1%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
6777 Points ∼90%
HP EliteBook 850 G5 3JX58EA
UHD Graphics 620, 8250U, Toshiba XG5 KXG50ZNV256G
5795 Points ∼77% -14%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
5660 Points ∼75% -16%
Essentials
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
8774 Points ∼100% +12%
Average of class Workstation
  (7172 - 8842, n=14)
8055 Points ∼92% +3%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
7874 Points ∼90% +1%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (7810 - 7842, n=2)
7826 Points ∼89% 0%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
7810 Points ∼89%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
7673 Points ∼87% -2%
HP EliteBook 850 G5 3JX58EA
UHD Graphics 620, 8250U, Toshiba XG5 KXG50ZNV256G
7262 Points ∼83% -7%
Score
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
4834 Points ∼100% +19%
Average of class Workstation
  (3281 - 5606, n=14)
4445 Points ∼92% +10%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
4046 Points ∼84%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
3818 Points ∼79% -6%
Average Intel Core i7-8550U, AMD Radeon Pro WX 3100 Mobile
  (3464 - 4046, n=2)
3755 Points ∼78% -7%
HP EliteBook 850 G5 3JX58EA
UHD Graphics 620, 8250U, Toshiba XG5 KXG50ZNV256G
3517 Points ∼73% -13%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
3498 Points ∼72% -14%
PCMark 8 Home Score Accelerated v2
3721 points
PCMark 8 Creative Score Accelerated v2
5369 points
PCMark 8 Work Score Accelerated v2
5137 points
Help

Storage Devices

Our test device is equipped with a Toshiba 256 GB SSD that has the model number XG5 KXG50ZNV256G. The XG5 is an M.2-2280 PCIe NVMe SSD that HP used in the EliteBook 850 G5. It is worth noting that the XG5 in the ZBook 15u G5 is faster than the one in its EliteBook sibling. The XG5 cannot keep pace with the Samsung SM961 though. The ZBook 15u G5 is 59% and 71% slower in CrystalDiskMark 3.0 than the ZBook 15u G4 and the ZBook 15 G4, respectively, both of which are equipped with an SM961.

The ZBook 15u G5 cannot accommodate multiple storage devices like its predecessor could. This won’t be a problem for most users, but workstations are equipped to different standards than typical notebooks. It would have been nice had HP added at least a second M.2-2280 slot. There is enough space in the case to accommodate this. People with greater requirements may need to resort to buying more expensive models like the ZBook Studio, the ZBook 15 or the ZBook 17.

HP ZBook 15u G5 2ZC05EA
Toshiba XG5 KXG50ZNV256G
HP ZBook 15u G4
Samsung SM961 MZVKW512HMJP m.2 PCI-e
HP EliteBook 850 G5 3JX58EA
Toshiba XG5 KXG50ZNV256G
HP ZBook 15 G4-Y4E80AV
Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
Lenovo ThinkPad P52s-20LB000HGE
Samsung PM961 MZVLW256HEHP
Average Toshiba XG5 KXG50ZNV256G
 
CrystalDiskMark 3.0
59%
-14%
71%
24%
-14%
Write 4k QD32
351.5
478.3
36%
338.5
-4%
618.5
76%
470.67
34%
331 (208 - 352, n=9)
-6%
Read 4k QD32
276.7
551.8
99%
282
2%
733.4
165%
562.94
103%
311 (245 - 396, n=9)
12%
Write 4k
99.1
152.7
54%
99.15
0%
187.6
89%
164.77
66%
107 (94.5 - 133, n=9)
8%
Read 4k
35.5
53.35
50%
31.76
-11%
57.52
62%
61.63
74%
28.4 (7.04 - 35.5, n=9)
-20%
Write 512
488.9
1535
214%
284.9
-42%
1175
140%
557.75
14%
330 (266 - 489, n=9)
-33%
Read 512
912.4
413.4
-55%
913.9
0%
411.6
-55%
557.38
-39%
829 (444 - 922, n=9)
-9%
Write Seq
916.7
1580
72%
393.4
-57%
1682
83%
862.2
-6%
400 (270 - 917, n=9)
-56%
Read Seq
2040
2042
0%
2069
1%
2166
6%
897.9
-56%
1838 (1046 - 2069, n=9)
-10%
Toshiba XG5 KXG50ZNV256G
Sequential Read: 2040 MB/s
Sequential Write: 916.7 MB/s
512K Read: 912.4 MB/s
512K Write: 488.9 MB/s
4K Read: 35.5 MB/s
4K Write: 99.1 MB/s
4K QD32 Read: 276.7 MB/s
4K QD32 Write: 351.5 MB/s

Graphics Card

The AMD Radeon Pro WX 3100 replaces the outdated AMD FirePro W4190M that HP used in the ZBook 15u G4. The WX 3100 is based on AMD Polaris architecture, specifically the AMD Radeon RX 540. The WX 3100 runs in conjunction with Intel UHD Graphics 620 and only turns on when graphically demanding applications are running. Simpler GPU tasks are handled by the UHD Graphics 620. The AMD switchable graphics proved unreliable in our testing though. Even with benchmarks set to “high performance” mode in the AMD Control Center, they still ran on the Intel GPU rather than the AMD. Getting a benchmark to run with the AMD GPU seemed a case of more luck than judgment.

The WX 3100 falls into the category of lower mid-range GPUs. The WX 3100’s main competitor is the Nvidia Quadro P500, which Lenovo has used in the ThinkPad P52s. The GPUs are typically matched in general and workstation benchmarks. The WX 3100 is around 20% ahead in some benchmarks whereas the Quadro P500 is slightly ahead in others. Both GPUs fail to compete against faster Quadro GPUs like the Nvidia Quadro M2200 found in the ZBook 15 G4.

Oddly, the WX 3100 is outperformed by the AMD FirePro W4190M in certain professional benchmarks. We put this down to throttling though as the WX 3100 should be faster than its older sibling, which it is in 3DMark benchmarks. We will be discussing this topic in greater detail in our Gaming Performance and Temperature sections.

3DMark 11 - 1280x720 Performance GPU
Average of class Workstation
  (841 - 20623, n=84)
5019 Points ∼100% +38%
Average AMD Radeon Pro WX 3100 Mobile
  (3632 - 3749, n=2)
3691 Points ∼74% +2%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
3632 Points ∼72%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
3022 Points ∼60% -17%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
2379 Points ∼47% -34%
HP EliteBook 850 G5 3JX58EA
Intel UHD Graphics 620, Intel Core i5-8250U
1682 Points ∼34% -54%
3DMark
1920x1080 Fire Strike Graphics
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
5786 Points ∼100% +119%
Average of class Workstation
  (752 - 14990, n=76)
4087 Points ∼71% +55%
Average AMD Radeon Pro WX 3100 Mobile
  (2644 - 2698, n=2)
2671 Points ∼46% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
2644 Points ∼46%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
2270 Points ∼39% -14%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
1806 Points ∼31% -32%
HP EliteBook 850 G5 3JX58EA
Intel UHD Graphics 620, Intel Core i5-8250U
1002 Points ∼17% -62%
1280x720 Cloud Gate Standard Graphics
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
37796 Points ∼100% +111%
Average of class Workstation
  (5836 - 102368, n=76)
26759 Points ∼71% +49%
Average AMD Radeon Pro WX 3100 Mobile
  (17922 - 19122, n=2)
18522 Points ∼49% +3%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
17922 Points ∼47%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
12601 Points ∼33% -30%
HP EliteBook 850 G5 3JX58EA
Intel UHD Graphics 620, Intel Core i5-8250U
8065 Points ∼21% -55%
1280x720 Ice Storm Standard Score
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
144957 Points ∼100% +207%
Average of class Workstation
  (26525 - 161394, n=69)
77105 Points ∼53% +64%
Average AMD Radeon Pro WX 3100 Mobile
  (47152 - 48101, n=2)
47627 Points ∼33% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
47152 Points ∼33%
Unigine Valley 1.0
1920x1080 Extreme HD DirectX AA:x8
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
27.9 fps ∼100% +158%
Average of class Workstation
  (6.1 - 74.8, n=28)
26.5 fps ∼95% +145%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
11.9 fps ∼43% +10%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
10.8 fps ∼39%
Average AMD Radeon Pro WX 3100 Mobile
  (9.4 - 10.8, n=2)
10.1 fps ∼36% -6%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
6.2 fps ∼22% -43%
1920x1080 Extreme HD Preset OpenGL AA:x8
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
23.2 fps ∼100% +268%
Average of class Workstation
  (5.6 - 60.8, n=27)
21 fps ∼91% +233%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
10.1 fps ∼44% +60%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
8.4 fps ∼36% +33%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
6.3 fps ∼27%
Average AMD Radeon Pro WX 3100 Mobile
  (5.6 - 6.3, n=2)
5.95 fps ∼26% -6%
Unigine Heaven 4.0
Extreme Preset OpenGL
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
30.6 fps ∼100% +314%
Average of class Workstation
  (6.8 - 88.2, n=15)
28.4 fps ∼93% +284%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
13.2 fps ∼43% +78%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
7.5 fps ∼25% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
7.4 fps ∼24%
Average AMD Radeon Pro WX 3100 Mobile
  (6.8 - 7.4, n=2)
7.1 fps ∼23% -4%
Extreme Preset DX11
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
35 fps ∼100% +298%
Average of class Workstation
  (8.1 - 100, n=19)
29.5 fps ∼84% +235%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
14.3 fps ∼41% +63%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
8.8 fps ∼25% 0%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
8.8 fps ∼25%
Average AMD Radeon Pro WX 3100 Mobile
  (8.1 - 8.8, n=2)
8.45 fps ∼24% -4%
Unigine Heaven 2.1 - 1280x1024 high, Tesselation (normal), DirectX11 AA:off AF:1x
Average of class Workstation
  (9.9 - 163, n=51)
47.1 fps ∼100% +28%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
36.8 fps ∼78%
Average AMD Radeon Pro WX 3100 Mobile
 
36.8 fps ∼78% 0%
SPECviewperf 11
1920x1080 Siemens NX
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
49.48 fps ∼100% +99%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
38.74 fps ∼78% +56%
Average of class Workstation
  (2.54 - 111, n=90)
33.4 fps ∼68% +34%
Average AMD Radeon Pro WX 3100 Mobile
  (24.9 - 25.3, n=2)
25.1 fps ∼51% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
24.88 fps ∼50%
1920x1080 Tcvis
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
52.86 fps ∼100% +163%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
41.41 fps ∼78% +106%
Average of class Workstation
  (3.52 - 58.1, n=90)
32.5 fps ∼61% +62%
Average AMD Radeon Pro WX 3100 Mobile
  (20.1 - 20.7, n=2)
20.4 fps ∼39% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
20.1 fps ∼38%
1920x1080 SolidWorks
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
56.8 fps ∼100% +21%
Average AMD Radeon Pro WX 3100 Mobile
  (46.8 - 47.8, n=2)
47.3 fps ∼83% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
46.79 fps ∼82%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
42.52 fps ∼75% -9%
Average of class Workstation
  (6.73 - 74, n=90)
41.8 fps ∼74% -11%
1920x1080 Pro/ENGINEER
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
22.18 fps ∼100% +190%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
16.57 fps ∼75% +116%
Average of class Workstation
  (2.62 - 24, n=90)
13.8 fps ∼62% +80%
Average AMD Radeon Pro WX 3100 Mobile
  (7.66 - 7.69, n=2)
7.68 fps ∼35% 0%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
7.66 fps ∼35%
1920x1080 Maya
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
57.67 fps ∼100% +26%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
54.64 fps ∼95% +20%
Average of class Workstation
  (6.2 - 124, n=90)
51.5 fps ∼89% +13%
Average AMD Radeon Pro WX 3100 Mobile
  (45.6 - 46.8, n=2)
46.2 fps ∼80% +1%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
45.64 fps ∼79%
1920x1080 Lightwave
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
64.82 fps ∼100%
Average AMD Radeon Pro WX 3100 Mobile
  (64.7 - 64.8, n=2)
64.7 fps ∼100% 0%
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
57.49 fps ∼89% -11%
Average of class Workstation
  (7.99 - 84, n=90)
49.1 fps ∼76% -24%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
46.67 fps ∼72% -28%
1920x1080 Ensight
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
58.49 fps ∼100% +225%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
32.3 fps ∼55% +79%
Average of class Workstation
  (3.39 - 110, n=90)
32.1 fps ∼55% +78%
Average AMD Radeon Pro WX 3100 Mobile
  (18 - 18.6, n=2)
18.3 fps ∼31% +2%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
18.01 fps ∼31%
1920x1080 Catia
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
52.67 fps ∼100% +55%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
40.16 fps ∼76% +18%
Average of class Workstation
  (5.1 - 82.3, n=89)
37.7 fps ∼72% +11%
Average AMD Radeon Pro WX 3100 Mobile
  (34 - 38, n=2)
36 fps ∼68% +6%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
33.99 fps ∼65%
SPECviewperf 12
1900x1060 Solidworks (sw-03)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
99.53 fps ∼100% +218%
Average of class Workstation
  (15.6 - 166, n=61)
67.3 fps ∼68% +115%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
53.48 fps ∼54% +71%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
31.31 fps ∼31%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
30.12 fps ∼30% -4%
Average AMD Radeon Pro WX 3100 Mobile
  (26.1 - 31.3, n=2)
28.7 fps ∼29% -8%
1900x1060 Siemens NX (snx-02)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
59.02 fps ∼100% +215%
Average of class Workstation
  (4.87 - 184, n=61)
48.6 fps ∼82% +159%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
28.31 fps ∼48% +51%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
19.91 fps ∼34% +6%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
18.74 fps ∼32%
Average AMD Radeon Pro WX 3100 Mobile
  (14.3 - 18.7, n=2)
16.5 fps ∼28% -12%
1900x1060 Showcase (showcase-01)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
31.14 fps ∼100% +328%
Average of class Workstation
  (3.93 - 68.8, n=61)
26.5 fps ∼85% +264%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
12.13 fps ∼39% +67%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
10.21 fps ∼33% +40%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
7.28 fps ∼23%
Average AMD Radeon Pro WX 3100 Mobile
  (5.19 - 7.28, n=2)
6.24 fps ∼20% -14%
1900x1060 Medical (medical-01)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
24.64 fps ∼100% +518%
Average of class Workstation
  (0.99 - 71.5, n=60)
18.4 fps ∼75% +361%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
9.33 fps ∼38% +134%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
4.51 fps ∼18% +13%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
3.99 fps ∼16%
Average AMD Radeon Pro WX 3100 Mobile
  (3.71 - 3.99, n=2)
3.85 fps ∼16% -4%
1900x1060 Maya (maya-04)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
48.34 fps ∼100% +311%
Average of class Workstation
  (5.4 - 102, n=61)
38.7 fps ∼80% +229%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
21.61 fps ∼45% +84%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
16.66 fps ∼34% +42%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
11.75 fps ∼24%
Average AMD Radeon Pro WX 3100 Mobile
  (9.22 - 11.8, n=2)
10.5 fps ∼22% -11%
1900x1060 Energy (energy-01)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
5.15 fps ∼100% +1881%
Average of class Workstation
  (0.06 - 15, n=61)
3.55 fps ∼69% +1265%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
0.55 fps ∼11% +112%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
0.34 fps ∼7% +31%
Average AMD Radeon Pro WX 3100 Mobile
  (0.26 - 0.31, n=2)
0.285 fps ∼6% +10%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
0.26 fps ∼5%
1900x1060 Creo (creo-01)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
71.24 fps ∼100% +279%
Average of class Workstation
  (14 - 132, n=61)
46.4 fps ∼65% +147%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
35.91 fps ∼50% +91%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
18.82 fps ∼26%
Average AMD Radeon Pro WX 3100 Mobile
  (17.1 - 18.8, n=2)
18 fps ∼25% -4%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
16.87 fps ∼24% -10%
1900x1060 Catia (catia-04)
HP ZBook 15 G4-Y4E80AV
NVIDIA Quadro M2200, Intel Xeon E3-1535M v6
71.41 fps ∼100% +318%
Average of class Workstation
  (13.4 - 156, n=61)
52.2 fps ∼73% +205%
Lenovo ThinkPad P52s-20LB000HGE
NVIDIA Quadro P500, Intel Core i7-8550U
27.97 fps ∼39% +64%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
18.13 fps ∼25% +6%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
17.1 fps ∼24%
Average AMD Radeon Pro WX 3100 Mobile
  (15.1 - 17.1, n=2)
16.1 fps ∼23% -6%
1900x1060 3ds Max (3dsmax-05)
Average of class Workstation
  (11.4 - 93.6, n=8)
40.9 fps ∼100% +31%
Average AMD Radeon Pro WX 3100 Mobile
 
31.3 fps ∼77% 0%
HP ZBook 15u G5 2ZC05EA
AMD Radeon Pro WX 3100 Mobile, Intel Core i7-8550U
31.28 fps ∼76%
HP ZBook 15u G4
AMD FirePro W4190M, Intel Core i7-7500U
11.42 fps ∼28% -63%
3DMark 06 Standard
18186 points
3DMark Vantage P Result
11702 points
3DMark 11 Performance
3993 points
3DMark Ice Storm Standard Score
47152 points
3DMark Cloud Gate Standard Score
11601 points
3DMark Fire Strike Score
2448 points
Help

Gaming Performance

While workstations and their dedicated GPUs are not designed with gaming in mind, it is still interesting to see how they handle modern games.

We used The Witcher 3 at Ultra settings to test the GPU under load like we used Cinebench to test the CPU. GPU performance dropped by nearly 50% after a short time of running our test. This behavior is replicated in other game benchmarks too, with performance dropping significantly if we run benchmarks concurrently. This GPU behavior meant that we had to let our test device cool down before running the next game benchmark.

012345678910Tooltip
The Witcher 3 ultra

The Radeon Pro WX 3100 has the potential to perform slightly worse than the Nvidia GeForce MX150, as the performance of the ThinkPad T580 in our comparison table demonstrates. The Radeon Pro WX 3100 is suitable for some gaming, but the GPU is restricted to running newer titles at lower resolutions and quality settings. In short, the GPU throttles in the ZBook 15u G5 because of poor thermal management.

BioShock Infinite - 1366x768 High Preset
HP ZBook 15 G4-Y4E80AV
Quadro M2200, E3-1535M v6, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH
149.1 fps ∼100% +119%
Average of class Workstation
  (22.2 - 233, n=48)
101 fps ∼68% +48%
Lenovo ThinkPad T580-20LAS01H00
GeForce MX150, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
85.2 fps ∼57% +25%
HP ZBook 15u G5 2ZC05EA
Radeon Pro WX 3100 Mobile, 8550U, Toshiba XG5 KXG50ZNV256G
68.2 fps ∼46%
Lenovo ThinkPad P52s-20LB000HGE
Quadro P500, 8550U, Samsung PM961 MZVLW256HEHP
66.4 fps ∼45% -3%
Average AMD Radeon Pro WX 3100 Mobile
  (47 - 68.2, n=2)
57.6 fps ∼39% -16%
HP ZBook 15u G4
FirePro W4190M, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
46.86 fps ∼31% -31%
HP EliteBook 850 G5 3JX58EA
UHD Graphics 620, 8250U, Toshiba XG5 KXG50ZNV256G
23.1 fps ∼15% -66%
low med. high ultra
BioShock Infinite (2013) 154.876.668.223.4fps
The Witcher 3 (2015) 48.22915.46.65fps
Rise of the Tomb Raider (2016) 50.429.114.8fps
Doom (2016) 30.515.6fps
Civilization VI (2016) 7351.118.2fps
Warhammer 40.000: Dawn of War III (2017) 71.822.41fps
Call of Duty WWII (2017) 84.645.524.8fps
Star Wars Battlefront 2 (2017) 6523.1fps

Emissions

Fan Noise

The ZBook 15u G5 manages its fan poorly and in the same way as the EliteBook 850 G5. The ZBook 15u G5 fails to remain silent in everyday use, with the fan starting up with an even greater frequency under low load. The fan in our test device averaged 29.8 dB(A) at idle, which rose to an audible 36.5 dB(A) under load. The fan noise is rather high pitched, which we found annoying, particularly under load. Worse still, the fan occasionally sounds as if it is pulsing.

HP needs to tune the fan behavior too. We noticed that the fan still runs long after we close a demanding application like a game. CPU load can even have returned to idle levels and the fan will still be running.

Unfortunately, our test device has some coil whine that we could hear when we placed our ear directly above the keyboard. While this may not disturb all users, it would be better had HP eliminated this completely.

Noise Level

Idle
29.8 / 29.8 / 30.8 dB(A)
Load
32.9 / 36.5 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm distance)   environment noise: 29.8 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2033.129.631.933.32529.526.52929.73132.730.430.634.74030.527.328.130.3502927.528.727.56326.827.426.327.78025.725.425.631.710026.626.225.827.212524.424.525251602423.623.224.220023.122.422.223.425021.420.921.621.931520.119.520.421.140019.418.71920.750019.118.218.521.563019.417.717.421.480018.517.517.222.5100019.117.217.422.3125020.116.716.924.1160020.716.516.826.2200020.716.717.427.7250022.617.417.427.9315019171727.4400018.217.117.322.9500017.917.417.220.7630017.818.417.520800018.919.217.918.51000018.719.417.917.9125002020.918.317.71600019.220.41817.5SPL31.93029.836.5N1.61.31.32.3median 19.4HP ZBook 15u G5 2ZC05EAmedian 18.4median 17.9median 22.3Delta1.21.81.72.328.531.433.831.132.528.330.330.729.330.431.334.932.131.129.528.630.529.631.12728.127.227.529.727.626.827.127.22627.825.524.926.626.62625.12627.425.727.424.125.225.323.923.824.625.426.623.824.322.922.524.822.623.522.522.32522.422.42120.821.820.420.620.619.620.218.920.720.319.419.218.121.521.219.519.317.722.621.419.619.516.723.522.321.519.116.723.22319.818.916.124.524.321.919.315.724.323.220.318.415.92525.221.519.615.927.127.522.919.915.931.32420.118.116.326.82118.317.416.623.720.418.317.416.922.818.818.217.617.219.218.818.417.717.218.318.918.517.717.31820.221.217.917.41835.332.531.22937.52.21.71.61.22.5median 22.3Lenovo ThinkPad P52s-20LB000HGEmedian 20.3median 19.3median 17.2median 23.51.71.51.91.71.5hearing rangehide median Fan Noise

Temperature

FurMark & Prime95 stress tests
FurMark & Prime95 stress tests

On the plus side, the ZBook 15u G5 is a comparatively cool device. Our test device averaged 23.1 °C at idle and had a maximum idle temperature of 23.9 °C. Temperatures remain relatively cool under load too, with the top case remaining below 40 °C and the palm rest averaging 28.2 °C. The bottom case is the area where our test device gets hottest. Our test device reached an average of 37.8 °C in The Witcher 3 benchmark and 43.9 °C at its hottest point near the display hinge. It may be worth noting that our test device got marginally hotter in The Witcher 3 benchmark than it did in our FurMark and Prime95 benchmarks.

The FurMark and Prime95 stress tests highlight how HP has managed to achieve these thermals though. After a few seconds, the CPU clock drops to 2.2 GHz, reducing further to 1.5 GHz after only a few minutes. This is 300 MHz lower than the 1.8 GHz base clock speed. The GPU performs equally poorly, with its clock speed dropping from 750 MHz to 250 MHz after a short time. The cause of this heavy throttling is the temperature limit that HP has set. Core temperatures cannot exceed 70 °C, upon which temperature the CPU and GPU will throttle.

This throttling affects everyday use, which we observed in our The Witcher 3 loop. Additionally, performing a 3DMark11 benchmark after our stress testing produces a lower result than when we tested the device from cold.

Max. Load
 37.3 °C
99 F
39.8 °C
104 F
38.3 °C
101 F
 
 36.2 °C
97 F
39.2 °C
103 F
37.2 °C
99 F
 
 28.9 °C
84 F
26.9 °C
80 F
27 °C
81 F
 
Maximum: 39.8 °C = 104 F
Average: 34.5 °C = 94 F
42.7 °C
109 F
43.1 °C
110 F
39.4 °C
103 F
37 °C
99 F
38.5 °C
101 F
38.7 °C
102 F
30.5 °C
87 F
32.8 °C
91 F
33.6 °C
92 F
Maximum: 43.1 °C = 110 F
Average: 37.4 °C = 99 F
Power Supply (max.)  43.4 °C = 110 F | Room Temperature 20.7 °C = 69 F | Voltcraft IR-900
Heat-map of the top case during a stress test
Heat-map of the top case during a stress test
Heat-map of the bottom case during a stress test
Heat-map of the bottom case during a stress test

Speakers

The ZBook 15u G5 has two speakers that are located above the keyboard. Good positioning does not equate to good sound quality though. While the quality is not abysmal, it is a bit tinny and there is some distortion at high volumes. The maximum volume is respectable at 83.6 dB(A) and is around 3 dB(A) louder than the ThinkPad P52s.

We would recommend using headphones or external speakers if you plan to listen to music or make video-conferencing calls for extended periods of time. Sound via the 3.5 mm jack is sufficiently loud.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2031.935.3252931.23130.634.44028.131.25028.729.16326.330.48025.627.710025.829.61252531.416023.240.220022.251.425021.654.331520.457.64001965.750018.568.963017.46980017.265.8100017.469.3125016.969.9160016.869.8200017.472.2250017.472.531501772.6400017.374.3500017.273.4630017.573.7800017.9711000017.972.61250018.367.6160001854.3SPL29.883.6N1.359.2median 17.9HP ZBook 15u G5 2ZC05EAmedian 69Delta1.78.731.130.729.330.131.131.831.130.429.730.62630.926.630.525.732.523.934.923.841.522.654.722.462.720.462.918.962.718.164.517.766.316.775.316.773.516.170.415.769.715.967.215.968.415.966.116.364.316.665.316.963.217.262.617.253.217.353.617.457.62980.61.248median 17.2Lenovo ThinkPad P52s-20LB000HGEmedian 63.21.76.2hearing rangehide median Pink Noise
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
HP ZBook 15u G5 2ZC05EA audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 24.9% lower than median
(±) | linearity of bass is average (9.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.5% away from median
(+) | mids are linear (5.2% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.9% away from median
(+) | highs are linear (2.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.4% difference to median)
Compared to same class
» 40% of all tested devices in this class were better, 10% similar, 50% worse
» The best had a delta of 13%, average was 20%, worst was 31%
Compared to all devices tested
» 28% of all tested devices were better, 6% similar, 66% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Lenovo ThinkPad P52s-20LB000HGE audio analysis

(±) | speaker loudness is average but good (80.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 15% lower than median
(±) | linearity of bass is average (11.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.6% higher than median
(+) | mids are linear (5.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.1% away from median
(+) | highs are linear (5.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (16.3% difference to median)
Compared to same class
» 25% of all tested devices in this class were better, 10% similar, 65% worse
» The best had a delta of 13%, average was 20%, worst was 31%
Compared to all devices tested
» 22% of all tested devices were better, 6% similar, 73% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Power Management

Power Consumption

Arguably, power consumption at idle is the most important factor when considering a device’s power efficiency in daily use. A high idle value necessitates charging your device far more frequently, which can be frustrating if you are away from an outlet. The ZBook 15u G5 performs well in this regard compared to the class average for workstations thanks to its ULV processor. Our test device has a minimum idle consumption of 3.2 W, which is far lower than the 14.3 W minimum idle consumption for average workstations. An advantage of ULV CPUs is that they support USB Power Delivery (PD) over USB Type-C up to 100 W. Typical workstations exceed 100 W consumption so they continue to use proprietary power connectors. The ZBook 15u G5 has an advantage here as it uses an industry standard port to charge and thus can use other chargers.

Our test device consumes a maximum of 71 W under load, which is at the upper limit of PD performance. The included power supply is rated at 65 W, 6 W fewer than the ZBook 15u G5’s maximum power draw. This should not be a problem in practice though as the CPU can only maintain peak performance for 28 seconds. The average load power draw is 62 W, so the device should still charge even under full load.

Power Consumption
Off / Standbydarklight 0.39 / 0.52 Watt
Idledarkmidlight 3.2 / 6.1 / 9.7 Watt
Load midlight 62 / 71 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
HP ZBook 15u G5 2ZC05EA
8550U, Radeon Pro WX 3100 Mobile, Toshiba XG5 KXG50ZNV256G, IPS LED, 1920x1080, 15.6
HP ZBook 15u G4
7500U, FirePro W4190M, Samsung SM961 MZVKW512HMJP m.2 PCI-e, IPS LED, 1920x1080, 15.6
HP EliteBook 850 G5 3JX58EA
8250U, UHD Graphics 620, Toshiba XG5 KXG50ZNV256G, IPS LED, 1920x1080, 15.6
HP ZBook 15 G4-Y4E80AV
E3-1535M v6, Quadro M2200, Samsung SSD SM961 1TB M.2 MZVKW1T0HMLH, IPS, 1920x1080, 15.6
Lenovo ThinkPad P52s-20LB000HGE
8550U, Quadro P500, Samsung PM961 MZVLW256HEHP, IPS LED, 1920x1080, 15.6
Average AMD Radeon Pro WX 3100 Mobile
 
Average of class Workstation
 
Power Consumption
-11%
13%
-69%
-4%
2%
-169%
Idle Minimum *
3.2
3.85
-20%
2.7
16%
5.9
-84%
4.1
-28%
3.3 (3.2 - 3.4, n=2)
-3%
14.2 (2.4 - 65.2, n=105)
-344%
Idle Average *
6.1
7.5
-23%
8.1
-33%
8.9
-46%
7.7
-26%
5.85 (5.6 - 6.1, n=2)
4%
20.3 (5.3 - 69, n=104)
-233%
Idle Maximum *
9.7
11.8
-22%
10.1
-4%
12.7
-31%
10.7
-10%
9.1 (8.5 - 9.7, n=2)
6%
23.8 (7.1 - 73.1, n=105)
-145%
Load Average *
62
47.7
23%
39
37%
95.2
-54%
52
16%
58.6 (55.2 - 62, n=2)
5%
88 (34.4 - 185, n=103)
-42%
Load Maximum *
71
90.2
-27%
37.2
48%
154
-117%
65
8%
71.2 (71 - 71.4, n=2)
-0%
128 (43.5 - 266, n=103)
-80%
Witcher 3 ultra *
48
46.7
3%
87.7
-83%
38.8
19%

* ... smaller is better

Battery Life

Charging time: 133 minutes
Charging time: 133 minutes

The ZBook 15u G5 has a 56 Wh battery. This is 5 Wh larger than its predecessor and is of a typical size for Ultrabooks. More powerful workstations typically have large batteries. This doesn’t mean they have better battery life than the ZBook 15u G5 though as they typically consume far more power thanks to their higher wattage CPUs. The only exception to this is the ThinkPad P52s, which has an Ultrabook CPU and footprint but comes with a 95 Wh battery thanks to its extended PowerBridge battery.

Clearly, the ThinkPad P52s has far better battery life than the ZBook 15u G5. However, the ZBook 15u G5 performs well, lasting 8 h 34 m in our practical Wi-Fi battery test. In this test, we run a script that simulates the load required to render websites. Our test device also lasted 10 h 23 m in our H.264 battery life test during which we run an H.264 video on a loop. These are good runtimes, albeit not outstandingly so. They are better than the ZBook 15u G4 but marginally less than the EliteBook 850 G5.

Our test device took 133 minutes to charge.

Battery Runtime
Idle (without WLAN, min brightness)
21h 41min
NBC WiFi Websurfing Battery Test 1.3 (IE 11)
8h 34min
Big Buck Bunny H.264 1080p
10h 23min
Load (maximum brightness)
3h 20min
HP ZBook 15u G5 2ZC05EA
8550U, Radeon Pro WX 3100 Mobile, 56 Wh
HP ZBook 15u G4
7500U, FirePro W4190M, 51 Wh
HP EliteBook 850 G5 3JX58EA
8250U, UHD Graphics 620, 56 Wh
HP ZBook 15 G4-Y4E80AV
E3-1535M v6, Quadro M2200, 90 Wh
Lenovo ThinkPad P52s-20LB000HGE
8550U, Quadro P500, 104 Wh
Average of class Workstation
 
Battery Runtime
-32%
-1%
-13%
66%
-46%
Reader / Idle
1301
966
-26%
1066
-18%
1096
-16%
2360
81%
543 (63 - 2360, n=103)
-58%
H.264
623
486
-22%
627
1%
629
1%
1131
82%
362 (123 - 1131, n=48)
-42%
WiFi v1.3
514
457
-11%
556
8%
547
6%
974
89%
372 (106 - 974, n=46)
-28%
Load
200
65
-67%
207
4%
115
-42%
221
11%
88.4 (22 - 323, n=96)
-56%

Verdict

Pros

+ high-quality metal case
+ decent connectivity
+ good selection of ports and security features
+ always stays cool
+ three-year warranty
+ impressive glass touchpad

Cons

- the display is not good enough for a workstation
- below average CPU performance
- GPU throttling in everyday use
- PointStick is worse than a TrackPoint
- no SD card reader
- frustrating fan control
- coil whine
- poor upgradability for a workstation
The HP ZBook 15u G5 in review. Test device courtesy of Cyberport and CUKUSA. Use code NBC20 for $20 off
The HP ZBook 15u G5 in review. Test device courtesy of Cyberport and CUKUSA. Use code NBC20 for $20 off

The HP ZBook 15u G5 appears to address the reasons for which we criticized the ZBook 15u G4 by packing an updated GPU and a more powerful quad-core CPU.

The ZBook 15u G5 is based on the EliteBook 850 G5, which is certainly not a bad thing. The EliteBook 850 G5 has some impressive qualities like the high-quality metal case and the decent touchpad. HP has even replicated the EliteBook 850 G5’s low surface temperatures and the decent selection of ports and security features. The ZBook 15u G5 has the same warranty period as the EliteBook 850 G5 too.

In effect, the ZBook 15u G5 is an office notebook with an ISV-certified GPU. This does not qualify the ZBook 15u G5 as a true workstation. The ZBook 15u G5 only has low surface temperatures because of conservative temperature limits. These limits and the weak cooling system combine to produce weak CPU and GPU performance to the extent that the Core i7-8550U is outperformed by the weaker Core i5-8250U in the EliteBook 850 G5. Moreover, the GPU fails to reach its full potential as the system thermal throttles before it can do so, resulting in the Radeon Pro WX 3100 being outperformed by its predecessor in certain benchmarks. This frustrating experience is made worse by the annoying high-pitched fan and the dreaded coil whine. In short, the ZBook 15u G5 reinforces the notion that a good workstation cannot be based on the reference design of an office notebook.

These are not the only problems either. The display in our test device is just not good enough for a device that costs 1,750 Euros (~$2,059). The color-space coverage and brightness are too low to be used in a workstation. We also expected to see an SD card reader and a better version of PointStick than the one used in the EliteBook 850 G5; PointStick is not at the same level as the ThinkPad TrackPoint. Finally, we would expect to see at least two M.2-2280 SSD slots in a 15.6-inch workstation rather than the one that is included. One is fine for office notebooks but not for workstations, particularly when there is space for an additional M.2-2280 slot.

The HP ZBook 15u G5 severely throttles under load, which is something that we do not expect to see from a device marketed as a workstation.

In summary, it is unclear for whom the HP ZBook 15u G5 is designed. The device falls short as a workstation because it is considerably underpowered compared to other workstations and has a display that is unsuitable for professional use. Equally, the ZBook 14u G5 is a better choice if you favor mobility but want to buy a ZBook. Moreover, there are better choices of office notebook too, like the cheaper EliteBook 850 G5.

Overall, we cannot recommend the HP ZBook 15u G5 because of its considerable shortcomings as a workstation.

HP ZBook 15u G5 2ZC05EA - 05/23/2018 v6
Benjamin Herzig

Chassis
91 / 98 → 93%
Keyboard
86%
Pointing Device
88%
Connectivity
69 / 81 → 85%
Weight
64 / 10-66 → 96%
Battery
91%
Display
85%
Games Performance
50%
Application Performance
91%
Temperature
90 / 95 → 95%
Noise
85 / 90 → 95%
Audio
47%
Camera
27 / 85 → 32%
Average
73%
80%
Workstation - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > HP ZBook 15u G5 (FHD, i7-8550U) Workstation Review
Benjamin Herzig, 2018-06- 5 (Update: 2018-07-11)